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RESEARCH ARTICLE

Spillover Effects of Comment Letters and Risk Management Role of ESG Performance: From the Perspective of Common Auditors

Jiaqi Ning

Jiaqi Ning

School of Management, Northwestern Polytechnical University, Xi'an, China

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Hui Liu

Corresponding Author

Hui Liu

School of Management, Northwestern Polytechnical University, Xi'an, China

Correspondence:

Hui Liu ([email protected])

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Ming Jia

Ming Jia

School of Management, Northwestern Polytechnical University, Xi'an, China

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First published: 10 July 2025

Funding: This work was supported by the National Natural Science Foundation of China (Programme No. 72002171); the Natural Science Basic Research Program of Shaanxi (Programme No. 2025JC-YBQN-968) and the Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University (Programme No. SOMBC202203).

ABSTRACT

This study examines whether the supervisory effect of comment letters spills over to non-commented firms through common auditors and whether ESG performance mitigates this risk. Using 13,080 Chinese firm-year observations, we find that auditors become increasingly prudent to non-commented clients after others receive comment letters, leading to increased audit fees, delayed reports and higher frequency of going concern opinions. Strong ESG performance mitigates this heightened prudence. Additional analysis shows that comment letter characteristics influence auditor behaviour, and spillover effects enhance non-commented firms' audit quality. Our study underscores the regulatory spillover of comment letters and ESG's role in risk mitigation.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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